#2870B3#2870B3

#2870B3 is a mid, vivid cyan. Relative luminance 0.153; OKLCH L 53.4% C 0.127 H 250.2°. Best body text is #FFFFFF at 5.17:1 contrast (WCAG AA passes).

Color values

HEX	#2870B3
RGB	rgb(40, 112, 179)
HSL	hsl(209, 63%, 43%)
HSV	hsv(209, 78%, 70%)
CMYK	cmyk(77.7%, 37.4%, 0%, 29.8%)
CIE-LAB	lab(46.03, 1.63, -41.81)
CIE-LCH	lch(46.03, 41.85, 272.24°)
OKLab	oklab(53.44% -0.0428 -0.1192)
OKLCH	oklch(53.44% 0.127 250.2)
XYZ	xyz(14.8028, 15.2924, 44.8106)
Luminance	0.1529 (WCAG relative)
Temperature	cool
Family	cyan

Closest named colors

Perceptual scales

Shades

Tints

Tones

OKLCH scale

Color harmonies

complementary

#2870B3 #B36B28

analogous

#28B3B0 #2870B3 #282AB3

triadic

#2870B3 #B32870 #70B328

tetradic

#2870B3 #B028B3 #B36B28 #2AB328

square

#2870B3 #B028B3 #B36B28 #2AB328

split-complementary

#2870B3 #B3282A #B3B028

monochromatic

#12314F #1D5181 #2870B3 #438FD5 #75ADE0

Accessibility & contrast

On white

5.17

#2870B3 on #FFFFFF

AA ✓AA large ✓AAA ✗

On black

4.06

#2870B3 on #000000

AA ✗AA large ✓AAA ✗

Best text color

#FFFFFF on #2870B3

5.17:1 — WCAG AA (normal text) passes

Contrast matrix

fg \ bg	##2870B3	#FFFFFF	#000000	##FFFFFF
##2870B3	1.00	5.17	4.06	5.17
#FFFFFF	5.17	1.00	21.00	1.00
#000000	4.06	21.00	1.00	21.00
##FFFFFF	5.17	1.00	21.00	1.00

Color blindness preview

Protanopia (red-blind)

#5174B6

Deuteranopia (green-blind)

#3C67B2

Tritanopia (blue-blind)

#008089

Achromatopsia (no color)

#6D6D6D

Design tokens & code

CSS

--color: #2870b3;
/* rgb */ color: rgb(40, 112, 179);
/* oklch */ color: oklch(53.4% 0.127 250.2);

Tailwind

colors: {
  custom: {
    50: '#7698ca',
    500: '#2870b3',
    950: '#000000',
  },
}

SCSS

$custom: #2870b3;
$custom-light: #7698ca;
$custom-dark: #000000;

JSON

{
  "hex": "#2870b3",
  "rgb": {
    "r": 40,
    "g": 112,
    "b": 179
  },
  "hsl": {
    "h": 208.921,
    "s": 63.47,
    "l": 42.941
  },
  "oklch": {
    "l": 0.53435,
    "c": 0.12664,
    "h": 250.2
  },
  "luminance": 0.15294
}

Semantic roles & 50–950 ramp

primary

#2870B3

secondary

#C89A6F

accent

#9141E6

background

#F7F9FC

surface

#EEF2F8

border

#C9CCD1

text

#0A0D13

muted

#7C7E82

Preview Lab

Preview with #2870B3

Body copy rendered with the generated semantic roles for this colour.

Preview Lab → · Contrast checker → · Palette generator →